yuhao0102/leetcode

leetcode solutions.

Leetcode 150

1 - Two Sum

2 - Add Two Numbers

3 - Longest Substring Without Repeating Characters

4 - Median of Two Sorted Arrays

5 - Longest Palindromic Substring

6 - ZigZag Conversion

7 - Reverse Integer

8 - String to Integer (atoi)

9 - Palindrome Number

10 - Regular Expression Matching

11 - Container with Most Water

12 - Integer to Roman

13 - Roman to Integer

14 - Longest Common Prefix

15 - 3Sum

16 - 3Sum Closest

17 - Letter Combinations of a Phone Number

18 - 4Sum

19 - Remove Nth Node From End of List

20 - Valid Parentheses

21 - Merge Two Sorted Lists

22 - Generate Parentheses

23 - Merge k Sorted Lists

24 - Swap Nodes in Pairs

25 - Reverse Nodes in k-Group

26 - Remove Duplicates from Sorted Array

27 - Remove Element

28 - Implement strStr()

29 - Divide Two Integers

30 - Substring with Concatenation of All Words

31 - Next Permutation

32 - Longest Valid Parentheses

33 - Search in Rotated Sorted Array

34 - Find First and Last Position of Element in Sorted Array

35 - Search Insert Position

36 - Valid Sudoku

37 - Sudoku Solver

38 - Count and Say

39 - Combination Sum

40 - Combination Sum II

41 - First Missing Positive

42 - Trapping Rain Water

43 - Multiply Strings

44 - Wildcard Matching

45 - Jump Game II

46 - Permutations

47 - Permutations II

48 - Rotate Image

49 - Group Anagrams

50 - Pow(x,n)

51 - N-Queens

52 - N-Queens II

53 - Maximum Subarray

54 - Spiral Matrix

55 - Jump Game

56 - Merge Intervals

57 - Insert Interval

58 - Length of Last Word

59 - Spiral Matrix II

60 - Permutation Sequence

61 - Rotate List

62 - Unique Paths

63 - Unique Paths II

64 - Minimum Path Sum

65 - Valid Number

66 - Plus One

67 - Add Binary

68 - Text Justification

69 - Sqrt(x)

70 - Climb Stairs

71 - Simplify Path

72 - Edit Distance

73 - Set Matrix Zeroes

74 - Search a 2D Matirx

75 - Sort Colors

76 - Minimum Window Substring

77 - Combinations

78 - Subsets

79 - Word Search

80 - Remove Duplicates from Sorted Array II

81 - Search in Rotated Sorted Array II

82 - Remove Duplicates from Sorted List II

83 - Remove Duplicates from Sorted List

84 - Largest Rectangle in Histogram

85 - Maximal Rectangle

86 - Partition List

87 - Scramble String

88 - Merge Sorted Array

89 - Gray Code

90 - Subsets II

91 - Decode Ways

92 - Reverse Linked List II

93 - Restore IP Adresses

94 - Binary Tree Inorder Traversal

95 - Unique Binary Search Tree II

96 - Unique Binary Search Tree

97 - Interleaving String

98 - Valid Binary Search Tree

99 - Recover Binary Search Tree

100 - Same Tree

101 - Symmetric Tree

102 - Binary Tree Level Order Traversal

103 - Binary Tree Zigzag Level Order Traversal

104 - Maximum Depth of Binary Tree

105 - Construct Binary Tree from Preorder and Inorder Traversal

106 - Construct Binary Tree from Inorder and Postorder Traversal

107 - Binary Tree Level Order Traversal II

108 - Convert Sorted Array to Binary Search Tree

109 - Convert Sorted List to Binary Search Tree

110 - Balanced Binary Tree

111 - Minimum Depth of Binary Tree

112 - Path Sum

113 - Path Sum II

114 - Flatten Binary Tree to Linked List

115 - Distince Subsequences

116 - Populating Next Right Pointers in Each Node

117 - Populating Next Right Pointers in Each Node II

118 - Pascal's Triangle

119 - Pascal's Triangle II

120 - Triangle

121 - Best Time to Buy and Sell Stock

122 - Best Time to Buy and Sell Stock II

123 - Best Time to Buy and Sell Stock III

124 - Binary Tree Maximum Path Sum

125 - Valid Palindrome

126 - Word Ladder II

127 - Word Ladder

128 - Longest Consecutive Sequence

129 - Sum Root to Leaf Numbers

130 - Surrounded Regions

131 - Palindrome Partitioning

132 - Palindrome Partitioning II

133 - Clone Graph

134 - Gas Station

135 - Candy

136 - Single Number

137 - Single Number II

138 - Copy List with Random Pointer

139 - Word Break

140 - Word Break II

141 - Linked List Cycle

142 - Linked List Cycle II

143 - Reorder List

144 - Binary Tree Preorder Traversal

145 - Binary Tree Postorder Traversal

146 - LRU Cache

147 - Insertion Sort List

148 - Sort List

149 - Max Points on a Line

150 - Evaluate Reverse Polish Notation